Shock absorber



R. G. HAUSDORFER SHOCK ABSRBER Jan. 3, 1928.

Filed May l0 nl W ` VIIIIIIIIIA WIIIIIIIIIIIIIIIIIIIIIIIIIIIIlI/IIIIII atto: nu*

Patented Jan. 3, 1928.

Partnr ortica.

REINHOLD G. HAU'SLDGRFERj OF DETROIT, MICHIGAN.

SHOCK ABSORBER.

Application led May 10,

This invention relates te a shock absorbing device that has been primarily designed for vehicles having spring supported bodies, the device beingarpted to retard the recoil ot a vehicle body, traine or chassis relative te axles, end trucks or the like. which recoil is incident to road shocks and bodyY vibrations.

'lily invent-ien has special reference to that class of shock absorbing' devices wherein a lleible member connects two movable parts, as a vehicle axle and gme, and one end oit the flexible member is provided with an automatic recoil resisting mechanism. 1n connection with this type of shock absorbing` device, in v invention aims to provide a simple, durable and inexpensive structure wherein a novel spring resists the movement ot the .flexible member, and provision is made to regulate the tension of the spring', prevent the flexible member from bindingg` when assuming a norma-l position, permit of parts being; adjusted and placed in proper working order, and permits ot eas7 access being' had to any of the parts for lubricating and repair purposes,

My invention will be hereinafter speciiically described and then claimed, and reference will now be had to the drawingi wherein Figure 1 is a vertical longitudinal sec. tional viewot the shock absorbing device;

Fig. 2 is a vertical cross sectional. view taken on the line H-ll or Fig'. 1;

Fig. 3 is a horizontal sectional view ot the device taken on the line lll-lll of Fig. 1;

Fig. -lf Vis a perspective view ot the device, and

Fig, 5 is a detail sectional vi w of a tion of the device.

To put my invention into practice, l provide a. substantially sector' shaped casina shell havinga bottom wall 1 and end wall 2 and a curved wall 3. The walls 2 and 3 may be formed or provided with suitable brackets l so that the casing` shell may be supported from the vehicle trame 5, as shown in Fig'. 4.

Fitted on the casing' shell are side walls Gand 7 having flanges 8 embracing the edges rer- Y of the casing shell, and the flange 8 ot the side wall 7 may be cut and stamped to provide a series Vof teeth or notches 9. Obvi- 1926. Serial No. 107,978.

ousljv these teeth or notches may be otherwise formed to provide an arcnated rack at the walls The bottom wall 1 the casing provided with three openings 10, 11and`12- 'i'iounted in the asin;l shell, on the bottom wall 1 orer the openings 10 and 1l the shell A is base portion 13 ot an arcuated bracket 1i which confronts the curved wall 3 ot the casing shell and cooperates therewith in provi .ing a wav 15, ii'or a purpose that will hereinafter appear. rllhe bracket 13 is held relative to the shell wall 1 by clamping,r screws 13 extending through the opening 11 into the base 13, which is provided with a lug 1"? extending` through the openingl 10 for engagement with an adjusting screw 1S. rllhis screw is carried b v tapped bearing 1S) attached to or struck out from the wall 1 of the shell casing. lllhen the screws 1G are loose the screw 18 may be adjusted to shift the bracket base 13 longitudinallyr ot' v'the wall 1 to correctly position the bracket lll, which may be held by tightening the screws 16.

The bracket 1alis formed with parallel reinforcing webs 2O connected bv a pivot pin 21 to a link Q2, and said link supports a pivot pin 23 for the side ears or webs 24 ot a brake shoe 25 confronting the end wall Q. rEhe brake shoe 25 has side lugs 26 at its lower end engaa'eable with the lower end et the end wall 2 when the brake shoe is t'lted in one direction. and the upper end ot said brake shoe is rounded. as at 27,

Connectirgl the side valls (i and T oi the is a nut equipped tie rod 2S provided with a spacer sleeve 29 between said. walls. Encircling the spacci' sleeve 29 is a coiled spring' 30 which has one end thereof termed with an L-shapcd arm 31 extending' between the side wall 6 and the bracket 14 and between said bracket and the curved wall 3, where the end of said arm is connected to the inner end of a flexible member or strap 32 extending` upwardly through the way 15 in engagement with the bracket 1l, over the rounded end 27 ot the brake shoe 25, downwardly between the end wall 2 and the brake shoe Q5 and between the lugs 2G, and attached to a vehicle axle er other member in proximity to the casing.

vr'carried by alever 36 having its inner end loosely mounted on the tie rod 28. The outer end of the lever is provided with a handle 37 and a side extension or tooth 38 for engagement with the teeth or rack 9 of the casing wall 7. The lever 36 may have its outer end sprung sufliciently to permit Vof the tooth 38 disengaging the rack 9 and it is by virtue of this lever that the tension of the coiled spring 30 may be increased or decreased and held in its regulated condition. rlhe retractile force of the 'spring 30v is adapted to hold the inner end ofthe exible member 32 in proximity to the base 13 of the bracket 14, such being a normal or inactive position of the flexible member.

Assuming that the flexible member 82 is pulled out of the casing, incident to a recoil, said flexible member causes the brake vshoe 24 to be bodily moved towards the end wall2, causing a powerful frictional contact of the flexible member 32 against the wall 2, to resist outward movement of the flexible member. Cooperating with this frictional resistance is the spring 3() which has its yarm 81 swung upwardly as the inner end of the flexible member 32 is moved'over the arcuated bracket 14, which also offers some frictional resistance to the outwardl movement of the flexible member.

1 When the retractile force of the spring 30 returns the upper end of the flexible member 32v to its normal position, the brake shoe 24 is slightly raised and tilted whereby the lugs 26 engage the lower end of the wally 2 and prevent the brake shoe 25 from binding the flexible member 32 against the lower edge of the end wall 2.' In other words, the flexible membery 32 can readily shift 'through .the opening 12, and to limit the upwardly tilting action of the brake shoe 24 there is an instruek portion or stop 39 on the wall 3 engageable by that portion of the flexible member 32 extending over the upper rounded end 27 of the brake shoe 25. This long brake shoe is in contradistinction to a roller or cylindrical member and it is by virfue of the flexible member bearing on the upper end of the shoe and throughout its length that the shoe is shifted for a. braking action and tilted for a release action relative to the flexible member. Y

I attach considerable importance to the vfact that the greater part of myy shock absorbing device can be cut, stampedV and pressed from sheet metal and the parts easily and quickly assembled and finished to harmonize with the finishof the vehicle. Furthermore, movement of the flexible member into the casing without binding or buckling, and regulation of the spring30, a-re desirable .features of my invention. It is thought that.' the operation and utility of the device will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention, it is tov be understood that the structural elements are susceptible to such Vvariations and modifications as fall within the scope of the appended claims.

1. A shock absorbing device comprising a casing having a flat wall, a flexible member extending into said casing parallel to the flat wall thereof and adapted to be pulled from said casing, a spring tension device in said casing to resist outward' movement of said flexible member, and a movable brake shoe set in action byoutward movement of said flexible member to cooperate with the flat wall of said casing in resisting outward movement of said flexible member.

- 2. A shock absorbingdevice as called for in claim l, wherein said brake shoe is tiltable relative to the flat wall of said4 casing to afford clearance for saidflexible member entering said casing.

3. A shock absorbing device as called for in claim 1, wherein said spring tension device including a helical springwith one end thereof extended atv one side of saidvcasing and connectedto lan end of said flexible member. v y Y 4. A shock absorbing device as called for in claim l, wherein said spring tension device including a helical spring with-one end thereof connected to an end of lsaid-flexible member, and a swingable latch lever to which the opposite end of said spring is connected and adapted to bey adjusted relative to said casing.

5. In a` shock absorbing device wherein a flexible member. is movabl'ein a casing to resist recoil ,-a spring tension device in the casingfor said flexible member, sai-d spring tension device including a helical spring having one end thereof extending at one side of said casing and connected to said. flexible member, and a lever'swingablc at the opposite side of said casing and connected to the opposite end of said spring for regulating the tension thereof.

6. In a shock absorbing device wherein a flexible member is movablev in a casingto resist recoil ,-a spring tension device including a coiled vspring having one end thereof connected to said flexiblemember, a lever adjustable relative to said casing and connected to the opposite end ofsaidspjring'for regulating the tension thereof, and an adjustable bracket in said casing serving as a guide for said flexible member.v

llO

7. A shock absorbing device as called for in claim 5, further characterized by a rack on said casing engageable by said lever to hold said spring at a. desired tension.

8. A shock abeorbing device comprising a casing, an adjustabe bracket in said casing,

i a brake shoe pivotally supported from said bracket and adapted to cooperate with said casing as a brake7 a flexibe member eX- tending into said casing between the casing 10 Wall and said brake shoe, a spring tension device in said casing connected to said f1eX- ible member, and means adapted for regulatng said spring tension device from the exterior of said casing.

In testimony' whereof I affix my signature.

REINHOLD Gr. HAUSDORFER. 

